I wear normal sneakers in 11.5. Ordered the 46.5 and seems to be a little big. Could have gone half a size smaller. None the less, the heal material keeps my foot in place. My only complaint is I wish the back bottom piece was wider for a better stance. Comes with 2 inside removable sole pads that use a sticky gel to keep them in place. I like the stiffer one. Shoe is very stiff. Ventilation could be better. Will probably get hot in 95 degree weather. Be careful. I ordered white and already scuffed up the front with my front tire.